Building-block construction.



F. GRAY.

BUILDING BLOCK CUNSTRUCTION.

APPLICATION FILED MAR. 23. 1915.

1,147,915., Patented Jply 20, 1915.

I imnv SATES FRANK GRAY, OF FORT WORTH, TEXAS.

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carton.

BUILDING-BLOCK CON STRUCTION.

Specification of Letters Patent.

PatentedJuly so, was.

Application filed March 23, 1915. Serial No. 16,314.

'To all whom it may concern:

Be it known that I, FRANK GRAY, a c1t1- zen of the United States, residing at Fort,

qlVorth, in the county of Tarrant and State of Texas, have invented certain new and useful Improvements in Building-Block Construction, of whichthe following isca building purposes, and more particularly blocks for building silos and water tanks and other air and water tight structures; and. a further object is to provide blocks with bond ing means which are simple and which can be economically prepared and permanently secured in the blocks.

Another object is to provide vertical sealing joints in the upper and lower faces of the building blocks, and to provide horizontally extending sealing means, and to' provide for forming dowels of plastic material to prevent lateral movement of the blocks relative to each other.

Other objects and advantages will be explained in the following description andthe invention will be more particularly pointed out in the claim.

Reference is had to the accompanying drawings which form a part of this application.

Figure l is a side elevation of several building blocks connected together as here- .inafter set out. Fig. 2 is a vertical section of Fig. 1 taken substantially on the line w-a:. Fig. 3 is a similar view of a sin le block. -Fig. 4 is a perspective view 0 a blobk which is a slight variation from the blocks previously shown.

Similar characters of reference are used to indicate the same parts throughout the several views.

A number of building blocks are shown grouped together in Fig. 1. These blocks are stepped as shown more particularl in Figs. 2 and 3 along their longitu inal upper and lower faces. A step (2) is shown on the lower face of a block and a step (3) is shown on the upper face of a block, and the two steps are spaced apart for the pur pose of receiving plastic sealin material. The two steps, 2 and 3, thus provide vertical hearings to form a perfect seal between the upper and lower faces of the blocks, and the step 2 is preferably on the outside of the "block so that no moisture can ever enter from the outside of a the inside. hggj aontal-ly structure and pass to The space (4) thusformsa extending longitudinal cavity having vertical walls between two tiers of the blocks to receive plastic material for sealing purposes. Each block has a curved cavity (5) in each end so that when the endsof two blocks come together a circular verticalw cavity is formed through which. plastic material may be poured to the longitudinal cavities formed, when one tier is aid upon another.

Means are provided for reinforcing the blocks and locking the same together. Horizontal rods (6) are embedded in the blocks .during the molding rocess. Each rod (6) has an eye or loop 7) in one end and abent portion (8) projecting from the other end of the block, so that when two blocks are brought together, end to end, the bent terminal (8) will enter the eye or loop of. the rod (6) of the adjacent block. The terminal (8) can then be bent over as shown in Figs. 1 and 2. The bent terminal J(8) will thus serve as a tensioning means to draw blocks in close proximity toeach other. The upper and lower tiers of blocks are further bonded together; onetier of blocks breaks the joints of the tier above and the tier below and a circular cavity (9) is formed in the upper face of each block, and the circular cavity between the ends of the two blocks of the adjacent tier will register with the circular cavity (9), so that plastic material poured into cavity 5 will go ,down into the circular cavity (9) to form a bonding means in the nature of a dowel, against longitudinal or lateral movements of the blocks relative to each other. In

order that the blocks may be further bonded.

the reinforcing bonding rods which they contain, and the wall is made thus solid as if-thewhole were a monolithic structure.

What I claim, is,--

A building construction comprising con crete blocks having curved cavities in each end thereof, and a circular cavity in the upper face of each block, the vertical joints of the block being broken, and when two blocks meet, end to end, a circular cavity is formed between the ends registering with the circular cavity of the next block below, bonding devices consisting of a rod embedded horizontally in each block and projecting in the curved cavity of one end and formed into an eye, andthe other end projecting through the curved cavity of the other end of the block and formed into a bent terminal, and the bent terminal of one block and engaging the horizontal rod therein and,

pro] ecting upwardly into the circular cavity of the block, and a nut engaging the upper,

end of the eye bolt and plastic material filling the circular cavity between the ends of each block and extending down into the curved cavity of the next block below, and embedding said bonding devices, including the nuts on the ends of said eye-bolts.

In testimony whereof, I set my hand in the presence of two witnesses, this 20th day of March, 1915.

A. L. JACKSON, J. M. GREEK. 

